From c8c004d568f639b09a70deecce6c634ac45d4842 Mon Sep 17 00:00:00 2001
From: hac425 <hac425xxx@gmail.com>
Date: Thu, 14 Nov 2019 14:30:29 +0000
Subject: modify build.sh and add document

---
 qbdi_mode/demo-so.c | 39 +++++++++++++--------------------------
 1 file changed, 13 insertions(+), 26 deletions(-)

(limited to 'qbdi_mode/demo-so.c')

diff --git a/qbdi_mode/demo-so.c b/qbdi_mode/demo-so.c
index 3ba7c449..5e74f268 100755
--- a/qbdi_mode/demo-so.c
+++ b/qbdi_mode/demo-so.c
@@ -1,46 +1,33 @@
 #include <stdio.h>
 
-
-
 // gcc -shared -o libdemo.so demo-so.c -w
-
-
-int target_func(char* buf, int size){
-    
+int target_func(char *buf, int size)
+{
     printf("buffer:%p, size:%p\n", buf, size);
-
     switch (buf[0])
     {
     case 1:
         puts("222");
-        if(buf[1]=='\x44'){
-            puts("aaaaaaaaaaaaaaaaaaaaa");
-            *(char*)(0) = 1;
-        }
-        break;
-    case '\xfe':
-        // assert(0);
-        if(buf[4]=='\xf0'){
-            puts("xxxiiii");
+        if (buf[1] == '\x44')
+        {
+            puts("null ptr deference");
+            *(char *)(0) = 1;
         }
         break;
     case 0xff:
-        if(buf[2]=='\xff'){
-            if(buf[1]=='\x44'){
-                *(char*)(0xdeadbeef) = 1;
-            }else{
-                puts("kkkkkk");
+        if (buf[2] == '\xff')
+        {
+            if (buf[1] == '\x44')
+            {
+                puts("crash....");
+                *(char *)(0xdeadbeef) = 1;
             }
         }
-        puts("xxxx");
         break;
     default:
-        puts("xxxxxxx");
+        puts("default action");
         break;
     }
 
     return 1;
 }
-
-
-
-- 
cgit 1.4.1